多路振弦式传感器桥梁检测系统设计  

Design of bridge-detection system using multi-channel vibrating wire sensor

作　　者：莫琳[1] 何华光[1] 陈妮[2] 谢开仲 

机构地区：[1]广西大学计算机与电子信息学院,广西南宁530004 [2]广西医科大学基础医学院,广西南宁530021 [3]广西大学土木建筑工程学院,广西南宁530004

出　　处：《传感器与微系统》2014年第4期68-71,共4页Transducer and Microsystem Technologies

基　　金：国家自然科学基金资助项目(51068001)

摘　　要：为了满足桥梁安全监测中振弦式传感器数据采集需求,设计了多路频率数据采集的测量系统。针对振弦式传感器输出信号微弱、容易受到干扰而造成的测量精度下降问题,设计了高效抑制干扰的硬件电路,软件以STM32处理器为核心,提出适合测量频率方案。测量系统能够在24 s内完成8个通道的振弦式传感器的测量,测量准确率高达99.9%。实验结果表明:该系统具有工作稳定性较高、硬件电路简单、抗干扰能力强等优点。For the desire of data acquisition of vibrating wire sensors in security detection of bridge,design a measurement system of multi-channel frequency data acquisition.Aiming at problem of weak output signal of vibrating wire sensors and easy to be interfered which result in precision decrease,hardware circuit which efficiently suppress interference is designed and software uses STM32 processor as the core,frequency measuring scheme is put forward.The measurement system can perform the measurement of vibrating wire sensors of 8 channels in 24 s,the measurement accuracy rate is as high as 99.9 ％.The experimental results show that the system has advantages of high working stability,simple hardware circuit,strong anti-interference capability.

关 键 词：振弦式传感器 数据采集 频率测量 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]